grades = (87, 100, 96, 77, 69, 83, 91, 77, 63, 85)
print(grades[1])
print(grades[:6])
print(grades.count(77))
print(grades.index(100))
print(len(grades))
list_grades = list(grades)
print(list_grades)
tup_grades = tuple(list_grades)
print(tup_grades)
grades_other = (34,67)
new_grades = grades + grades_other
print(new_grades)